E5 Series High Performance Universal Inverter User’s Manual
122
Chapter 7 Troubleshooting
Chapter 7 Troubleshooting
7.T List of Fault and Alarm Information
This chapter lists all the fault and alarm messages including the possible causes and corrective actions,
Once a fault is detected, the following fault code will be displayed on the operation panel, the fault
contact output operates, and the output to motor is disable, the motor will coast to stop. For details, refer
to the following table to identify and correct the cause of the fault.
For damages on units or questions that can’t be resolved, please contact with local distributorsTagents,
service centers or manufacturer for solutions.
Fault
No.
Fault
display
on panel
Fault description
Possible causes
Corrective actions
T
E.ocT
Over current
during
acceleration
Low grid voltage
Check input power supply
Start when the motor is spinning
Restart after the motor at standstill
Rotating inertial of load is too large
or shock load is too heavy
Increase the acceleration time and
reduce the sudden change of load
Improper setting motor parameters
Set motor parameters properly
Set start frequency too high
Decrease start frequency
Acceleration time too short
Prolong acceleration time
VTF curve setting are not correct
Adjust VTF setting and torque boost
Output power is too small
Replace inverter with higher model
T
E.ocT
Over current
during
deceleration
Low grid voltage
Check input power supply
Rotating inertial of load is too large
Choose appropriate dynamic
braking unit and braking resistor
Improper setting motor parameters
Set motor parameters properly
Deceleration time is too short
Prolong deceleration time
Output power is too small
Replace inverter with higher model
3
E.oc3
Over current at
constant speed
Sudden load change of during
operation
Decrease load’s abrupt frequency
change and amplitude
Improper setting motor parameters
Set motor parameters properly
Output power is too small
Replace inverter with higher model
4
E.oVT
Over voltage
during
acceleration
Motor short-circuit to ground
Check motor wiring
Abnormal input power supply
Check input power supply
Start when the motor is still rotating
Restart after the motor at standstill
5
E.oVT
Over voltage
during
deceleration
Motor short-circuit to ground
Check motor wiring
Rotating inertial of load is too large
Choose appropriate dynamic
braking unit and braking resistor
Deceleration time is too short
Prolong deceleration time
6
E.oV3
Over voltage at
constant speed
Motor short-circuit to ground
Check motor wiring
Abnormal input power supply
Check input power supply
Rotating inertial of load is too large
Choose appropriate dynamic
braking unit and braking resistor
7
E.PCU
Interference
protection
Severely interfered by exterior
signal
Ask professional technicians to
maintain
Summary of Contents for E5 Series
Page 1: ...E5 Series High Performance Universal Inverter USER S MANUAL E5 Series USER S MANUAL ...
Page 7: ...vi T Setting Process for Open Loop ...
Page 8: ...vii Open loop setting process continued ...
Page 9: ...viii 3 Setting Process for Closed Loop ...
Page 10: ...ix Setting Process for Closed Loop continued ...
